Pressure reducing device



Sept." 1G; 1940. .1. DE FREITAs 2,213,955

PRESSURE REDUCIN'G DEVICE Filed HalGh 15. 1939 il?. j.

n/ose/ de ezfa Patented Sept. 10, 1940 UNITED STTES OFFCE 1 Claim.

(Granted under the act of March 3, 1883, as amended April 3i), 1928; 370 0. G. 757) This invention relates generally to a fluid pressure reducing apparatus, but more particularly to an irrigating device for watering lawns and plants, the device being so constructed that it may be connected to the ordinary garden hose.

One object of theinvention is to provide a device which will reduce the force of the flow from the supply conduit without diminishing the volume of the water emitted to the soil or plants.

Another object of the invention is to provide a watering device of the class described which is of simple and inexpensive construction, and one which may be easily attached to the ordinary garden hose. Referring more particularly to the accompanying drawing in which corresponding parts are indicated by similar reference characters:

Fig. 1 is a perspective View, showing the device connected to a hydrant by the usual type of rubber hose; and

Fig. 2 is a perspective view of the device, partially broken away to show the upper and lower chambers, and the location of the intermediate perforated baille plate.

The irrigating device which forms the subject matter of this invention comprises three main parts: a trough i provided with a flanged inlet tube 2 having a hose connection, 3; a cover 4 provided with one large outlet opening 5, and two 3 smaller outlet openings 6 and 1, and a baille plate 8 provided with a series of openings 9 adjacent its perimeter, said baille plate being located intermediate the trough and the cover.

The three principal elements comprising the irrigating device, namely, the trough I, the cover 4, and the baille plate 8, are either soldered or otherwise suitably attached to each other along their contacting edges to form a casing having a centrally located perforated partition.

'Ihe trough i and the cover 4 form respectively lower and upper chambers Ill and il, which are separated by the intermediate perforated dividing wall or baille plate 8.

In the operation of the device, water from a pressure. On entering the upper chamber Il the pressure of the water is again reduced by spreading within the chamber il and by contact with the top of said chamber. The top of chamber li which is provided with openings 5, il, and 5 'i functions as a second baille plate which serves to further reduce the pressure of the water.

The total area of the perforations 9 in the baille plate 3 is of suillcient extent so as to preclude increase in pressure of the water ilowing 10 from the lower chamber i il to the upper chamber il, and the total area of the openings 5, ii, and 'i in the tcp of the cover is of sufficient extent so as to prevent increase in the pressure of the water flowing to the exterior of the casing. 15

By properly proportioning the size of each chamber, the size of the baille plate, the perforations in the baille plate, and the openings in the cover, the water which passes through the apparatus is reduced in pressure, and is emitted from the exit openings 5, 6, and l, in a non-spraying even flow which trickles from the casing to the surrounding soil, thus preventing any injury to plant life in the vicinity which might be caused by impact with a spraying stream. 25

Although in the foregoing description the device has been set forth as primarily adapted for irrigation purposes, it is evident that it could` also be used for disseminating gas, and in this event the intermediate perforated baille plate would function as a gas pressure reducing means.

Having described my invention, what I claim as new and wish to secure by Letters Patent is:

An irrigating device comprising a lower member including a bottom section and upwardly and outwardly extending plane surfaced side and end walls, said bottom section and walls defining a hollow trough-shaped admission chamber, a perforated baille plate attached to the edges of said upwardly and outwardly extending walls, an` upper member having a perforated top section and 0 downwardly and outwardly extending plane surfaced side and end walls forming a hollow inverted trough-shaped exhaust chamber, the edges of said downwardly extending walls being iastened to the edges of said baille plate, the periorations in said top member being out of alignment with those of said baille plate, whereby to prevent the direct flow of water from the admission chamber through the oriiices in the exhaust chamber.

JOSEPH DE FREITAS. 

